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Diptera.info :: Family forums :: Syrphidae
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Chalcosyrphus nemorum
Reimund Ley
#1 Print Post
Posted on 22-07-2022 12:28
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Location: Deutschland, Recklinghausen
Posts: 779
Joined: 25.04.14

this fly was about 7-10mm,
found in Germany, Baden-W├╝rttemberg, Radolfzell, altitude 390m, 8. 6. 2022


best wishes


Angelika/Reimund
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Edited by Reimund Ley on 27-07-2022 12:16
 
http://angelikaley-fotografie.de
Reimund Ley
#2 Print Post
Posted on 22-07-2022 12:28
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Location: Deutschland, Recklinghausen
Posts: 779
Joined: 25.04.14

.
Reimund Ley attached the following image:


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Reimund Ley
#3 Print Post
Posted on 22-07-2022 12:29
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Location: Deutschland, Recklinghausen
Posts: 779
Joined: 25.04.14

.
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Sundew
#4 Print Post
Posted on 26-07-2022 22:09
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Location: Berlin and Baden-W├╝rttemberg, Germany
Posts: 3799
Joined: 28.07.07

This is a bit tricky! To discriminate between C. nemorum and Xylota abiens, we need to see the abdomen (segments wider than long in C. nemorum), but here it is hidden under the wings. Then, the shape of the hind femora is important. In C. nemorum they are expanded towards the apex but then narrowed at the outermost tip, whereas in X. abiens the hind femora are not expanded and their underside is rather evenly curved (see https://www.flick...8435796193). The left hind femur in the lowermost picture tends to show the C. nemorum type, that's why I lean towards this species.
Regards, Sundew
 
Reimund Ley
#5 Print Post
Posted on 27-07-2022 12:16
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Location: Deutschland, Recklinghausen
Posts: 779
Joined: 25.04.14

Hello Claudia,


thanks to you for your answer and explanation.
We see the different and sorry, there are no more pictures.

We will call this fly Chalcosyrphus nemorum and hope it is OK.


greetings


Angelika/Reimund
 
http://angelikaley-fotografie.de
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Date and time
08 February 2023 17:57
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